11876805985209 has 16 divisors (see below), whose sum is σ = 17742255625920. Its totient is φ = 7003521956160.

The previous prime is 11876805985189. The next prime is 11876805985301. The reversal of 11876805985209 is 90258950867811.

11876805985209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11876805985209 - 2¹⁶ = 11876805919673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11876805987209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4863555694 + ... + 4863558135.

It is an arithmetic number, because the mean of its divisors is an integer number (1108890976620).

Almost surely, 2^{11876805985209} is an apocalyptic number.

It is an amenable number.

11876805985209 is a deficient number, since it is larger than the sum of its proper divisors (5865449640711).

11876805985209 is a wasteful number, since it uses less digits than its factorization.

11876805985209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9727113880.

The product of its (nonzero) digits is 87091200, while the sum is 69.

The spelling of 11876805985209 in words is "eleven trillion, eight hundred seventy-six billion, eight hundred five million, nine hundred eighty-five thousand, two hundred nine".